AT3 Tactical SPEAR XL V2 Replacement Barrel Nut Kit – Includes Collar & Collar Hardware
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- Free standard shipping on orders $139+ details
- 90-day no-hassle returns policy
- Backed by the AT3 Lifetime Warranty! what it covers
Product description
Revised Mounting Geometry for the SPEAR XL V2
Features
- Replacement barrel nut system designed for AT3 SPEAR XL V2 handguards
- Longer barrel nut uses revised geometry for the V2 mounting system
- Redesigned two-piece aluminum collar creates a more secure handguard lockup
- Steel barrel nut provides strength and durable receiver threads
- Barrel nut and collar remain separate components for independent installation and alignment
- Includes the matching V2 collar and collar mounting hardware
The AT3 SPEAR XL V2 Barrel Nut Kit replaces the original SPEAR XL mounting hardware with a longer barrel nut and redesigned collar interface. The revised geometry is intended to provide a more secure lockup between the handguard and barrel nut system while retaining the separate steel nut and aluminum collar design. This kit is intended as replacement or spare mounting hardware for SPEAR XL V2 handguards.
When replacing your barrel nut, look and make sure you know if it’s a V1 or V2.
Note: Does not include barrel nut wrench. Wrench sold separately or included with SPEAR XL handguards.
Specifications
- Brand: AT3 Tactical
- Model: SPEAR XL V2 Replacement Barrel Nut Kit
- MPN: AT3-SPEAR-XL-BN-V2
- Compatibility: AT3 SPEAR XL V2 Handguards
- Barrel Nut Material: Steel
- Collar Material: Aluminum
- System Type: Two-Piece Barrel Nut and Collar
- New BBL Nut System Implementation: 2026
What’s Included
- 1x AT3 SPEAR XL V2 Steel Barrel Nut
- 1x AT3 SPEAR XL V2 Aluminum Collar
- 1x Collar Hardware Set
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Questions & Answers
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Warranty & returns
Backed by the AT3 Lifetime Warranty!

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.
This includes AT3 Red Dot Sights, Handguards, Iron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.
In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.
If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.
If your product is in need of warranty service, please contact AT3 Tactical to start the process
Our contact info is available here. To expedite processing, please provide your order information and description of the defect.
Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.